Which of the following statements relating to the sampling theory are correct?
i. The values of the statistical measures based on the sampled units ae called values of statistic.
ii. In the simple random sampling technique, the element of the population and the unit of the sample are different.
iii. Snow-ball sampling technique is a probability based sampling technique.
iv. The 'law of statistical regularity' and the 'law of inertia of large numbers' are the main bases of the sample to become representative of the population. Choose the correct answer from the options given below:

A. (ii) and (iii)

B. (i) and (iv)

C. (i), (ii) and (iii)

D. (ii), (iii) and (iv)

Answer: Option B